pip install package 安装包
pip show package 查看包及路径
自动安装包形式:
try: import requests import pandas as pd from bs4 import BeautifulSoup import jieba except ImportError: import pip pip.main(["install", "--user", "requests","beautifulsoup4","matplotlib","wordcloud","pandas"])
文件形式提前安装:
pip install requests --save packages.txt
三目运算符:
yes exec if (执行条件)else not exec
判断stra, strb, strc中有一个存在string中则为真:
bool =any(str in [stra,strb,strc] for str in string)
判断stra, strb, strc中全部存在string中则为真:
bool =any(str in [stra,strb,strc] for str in string